| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas shielded arc welding method that can provide a fillet welded joint having moderate penetration and favorable weld bead.SOLUTION: When a lower plate and an upright plate are subjected to one-side fillet gas shielded arc welding, the welding is performed under the condition that the lower plate is tilted with respect to a horizontal direction; a diameter D of an electrode wire is 1.2-1.6 mm, an angle θ formed between the lower plate and the upright plate is 90-130°; an inclination angle α of a torch 3 in the welding direction is -10-20°, an inclination angle β of the lower plate with respect to the horizontal direction is 10-50°, and an angle γ formed between the electrode wire and the lower plate is in the range represented by the following numerical expression (A). (θ/2)-20°≤γ≤90°-β...(A)SELECTED DRAWING: Figure 1 |
